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Is a current relay same as potential relay?
current relay are using for over current low state & high state.but potential relay are related to voltage.
What voltage does a potential relay operate from?
The voltage for a potential relay will depend on the circuit that the relay is installed in. The relay can be made for low voltages (5v) to higher voltages (440.)
How do you install a hard start kit on an air conditioner?
Common wire of the potential relay goes to the compressor contactor. (5) Start wire of the potential relay goes to compressor run capacitor. (2) Run wire of the potential relay goes to the start capacitor. (1)
Will a relay with NC contacts provide logic function that is similar to a NOT logic gate?
yes we can implement the 'NOT' gate operation by using a relay. At first we have to know the logic of NOT gate. when i/p is high it will give o/p high and vice versa so for implementing this opertion via relay we have to use the relay contact "NC".i.e normally closed then only it is possible. By considering that we are using the NC contact of the relay then when we energise the coil of the relay the NC contact will change over to NO so it is similar to logic opertion i/p high --- o/p low Ex: the microwave oven won't get energised till the door is closed .
What a potential relay used for?
Potential or voltage relay is used for assisting the motor to start. Its operation is based on the increase in back-electro-motive force (back-EMF).
What does nc and no mean in electrical terms?
nc: Normally Closed (contact is closed when power is not applied) no: Normally Open (contact is open when power is not applied) Applies to a relay ex...: when power is applied to a relay the no(Normally Open contact will close and allow current to flow between two terminals on relay).
It will not. This relay is a Normally Open relay construction. The contacts are closed only when power is applied to the relay coil. You must use either an SPST-NC (Single Pole Single Throw – Nor?
It will not. This relay is a Normally Open relay construction. The contacts are closed only when power is applied to the relay coil. You must use either an SPST-NC (Single Pole Single Throw – Normally Closed) construction or an SPDT (Single Pole Double Throw) type of construction so a contact closure is presented when there is no power applied to the relay coil.
I have a Motion detector has a 6 wires. 2 for NC 2 for 12V and 2 for Tamp. It says to put the N.C to burgular protection zone on the control panel how can i connect the NC to a 12V relay instead?
I'm assuming you want the detection of motion to trigger some other event/system.In that case, you need to use the NC wires as a 'switch' to trigger the relay's coil.Apply the power supply's +12v to one NC wire, the other NC wire to relay coil positive, and the relay coil negativeto the power supply's 0v (negative or common) wire.You will also need to provide the 12 volt power to the detector itself (it also needs power to function). Of the two leads you have marked '12v', one should be positive and the other negative. Connect these to the appropriate positive or negative wires from the power supply.This will mean that during normal (no motion detected) operation, the normally closed (NC) contacts on the detector will keep the relay coil energized until motion is detected. Then the relay coil will de-energize.This is important because: The NO and NC contacts on the relay will be in the listed states while de-energized. In your case, they will be opposite of what is listed because in a normal condition your relay will be energized. This is because the sensor has NC contacts instead of NO contacts.In short: Whatever you want to happen during motion detection should be wired to the normally closed contacts on the relay (because relays are considered de-energized in the normal state, but yours will be energized in the normal state).*** (cough, cough) NERD!!!
How does a normally closed contact work?
De-energize it and note the position of the contacts.
How potential relay works in refrigeration?
A potential relay operates on the voltage potential created by the induced voltage in the starting winding of the motor. It is an electromagnetic switch whose coil is wired directly in to the motor circuit. When power is applied to the circuit, the motor starts . As the motor attains its running speed the start winding acts as an auto generator and the voltage potential produced energizes the relay coil which cuts out the start capacitor and the start winding . The start winding still acts as an auto generator , however , and continues to produce enough power to keep the relay energized.
Can relay affect the regulator performance?
A relay can affect the regulator's performance by limiting power it receives. This can severely restrict performance and result in potential damage to the equipment.
What is the difference between current relay and potential relay?
I think what you mean to ask is; "The difference between a current sensing, and potential sensing relay. I've never heard of a potential relay. Relays are "pulled in" by applying voltage to the coil, typically 120Vac, or 24Vdc. A current sensing relay will close its contacts when it is wired to sense a particular amount of current. Instead of applying voltage (turning on) the relay, it closes contacts when current flows through it. HVAC technician ***** A 'current' relay has a coil of low resistance wire (heavy gauge wire, few turns), and is energised only by a large current, such as the initial current of a motor starting. The relay coil is wired in series with the run/main winding of the motor, and the relay contacts are normally open. As the motor tries to start, the large current closes the relay, which momentarily brings the start/aux winding into circuit, allowing the motor to go. Used for split-phase and capacitor-start motors. A 'potential' relay has a coil of high resistance wire (light wire, many turns), and is wired in parallel with the start/aux winding, and the relay contacts are normally closed. At initial motor start-up, high curent will flow through both the run and start windings of the motor. As the motor reaches operating speed, the current reduces, and a "back EMF" is produced allowing current to now pass through the potential relay coil, and open the contacts. Used for capacitor-start and cap-start cap-run motors. Another HVAC technician. you sound like a real ahole. everyone in the field calls them potential relays, in addition look at a schematic on an AC and you'll find "PR" potential relay. what a dip#hit
